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J. J. STORER, I'.v MARTIN 8v G. 0. EATON. .GHLORINATION PROGBSS'OF OBTAINING GLD PROM-DRES.

No. 585,295. Patented June 29, 1897.

UNTTRD STATES PATENT Ormes.

JACOB J. STORER, OF NEV YORK, N. Y., FRANK MARTIN, OF TONVNSEND, MONTANA, AND GEORGE O. EATON, OF NEV YORK, N. Y.; SAID STORER ASSIGNOR TO MARY L. STORER AND SAID EATON ASSIGNOR TO EMMA O. EATON, OF NEV YORK, N. Y.

CHLORINATION PROCESS OF-OBTAINING GOLD FROVI ORE.

SPECIFICATION forming part of Letters Patent No. 585,295, dated Junev 29, 1897. Application filed February 6, 1896. Serial No. 578,276. (N specimens.)

To @ZZ whom it may concern: saturated, cause it to be conducted into a filo Be it known that'we, JACOB J. STORER, .reter of charcoal, by means of which the gold siding at New York, county of NewYork, may be precipitated, or to a precipitating- State of New York, FRANK MARTIN, residing tank in which the gold may be precipitated 5 at. Townsend, county of Meagher, State of by iron sulfate, sulfureted hydrogen,or other Montana, and GEORGE O. EATON, residing at reagents applied for such purposes. 5 vNew York, county of New York, and State of IVe have found that by introducing hot mi- New York, citizens of the United States, have nute particles of gold into a water-bath coninvented an Improved Process for Obtaining tainingnascent chloriu the solution of the gold 1o by Ohlorination the Gold from any Ore Oonis facilitated or hastened to an exceedinglytaining It, of which the following is a specimarked degree, so that its complete chlorina- 6o iication. tion by our method is almost instantaneous,

This invention relates to thetreatment of while by any of the present methods several ores containing gold; and its Objectis an iinhours are consumed in accomplishing this i5 proved process for obtaining by chlorination result. Hence it will be seen that by our the gold from any ore containing it. process great economies in time and labor 65 The present methods of treating ores conare made. taining gold for the purpose of winning that The accompanying drawing shows a partlymetal from them are so Well known that they sectional elevation of an apparatus adapted 2o require no description herein. for carrying out this process.

To carry our invention into effect, we re- In the drawing, Arepresents af urnace con- 7o duce the ore by suitable machinery to an eX- structed with opposite fireplaces B B in the ceedingly iine powder, then cause it to be base thereof, whose throats open into a flue Iioated on a current of air into and through which is vertical forashort distance, as shown a suitable highly-heated furnace for the purat O, and then is curved over a partitionpose of oxidizing the base elements of the ore, wall D and expanded into a large gas min- 75 whence the non-volatilizable portion shall fall gling and combustion chamber E, and then'is `continuously in separate hot particles dicontracted and carried perpendicularly down, rectly without arrest or retardation into a as shown at E', to communicate with a horibath of water containing free chlorin, chlo- Zontal iiue F, at the farther end of which is rid of lime, or chlorid of sodium in solution, a communicating smoke-stack G. 8o and simultaneously and continuously when In the partition-wall D is an air-chamber using the chlorids we introduce sulfur acids D', into which air may be admitted through or gases into said bath for the purpose of liban opening d, and the inclined faces of said erating the chlorin from its base or bases, so wall are provided with numerous perforathat it may attack the particles of gold and tions CZ', communicating with said chamber. 85 convert them into a soluble chlorid, and si- In the bottom of the fiue F is a tank I-I, multaneously and constantly we, by means extending from the furnace-base neariy to of suitable mechanism, keep the pulp and liqthe smoke-stack, and this tank is designed 4o uid in agitation to better expose the gold parto be filled with water up to the dotted line ticles to the action of the solvent, and continushown at 7L. In the farther end of the tank 9o ously, by means of suitable mechanism and is a well h', and arranged longitudinally in devices, we cause the pulp and liquid to be said tank is a screw conveyer L, and one or conveyed or drawn olf into settling-tanks for more deiiecting-walls L are arranged in said thedeposition therein of the pulp `from the horizontal iiue above the tank.

liquid and cause said liquid either to be re- The bottom of the smoke-stack is preferturned from said tanks to the bath to supply ably bowl-shaped, as shown at g, and a roseloss by evaporation therein and to take up jet or sprinkler g is fixed in the upper part more gold, or, if it be sufficiently auriferously of said stack.

M represents a suitable machine, such as a fan-blower, for instance, for forcing the tinely-pulverized ore which may be fed into it into the furnace on a current of air, or the ma'chine may both pulverize and introduce the ore.

The operation is as follows: The tank is filled with water to the dotted line shown at 72, and free chlorin, chlorid of lime, or chlorid of sodium is introduced therein. Fires are then made in the fireplaces and urged until the iiue portion O is sufficiently hot. Then the finely-pulverized ore is introduced into the machine M and air also admitted therein, and together and intermingled they are forced through the machine-pipe m up between the iireplaces axially into the vertical portion of said tine, Where the sulfur and other oxidizable elements of the ore ignite. The ascending column of ignited ore as it turns over the partition-wall D is attacked by jets of air issuing from the air-chamber D through the perforations d on that side, a blower (not Y the opening d.

shown) furnishing the necessary air through The ore column then passes into the expanded portion of the tlue-the gas mixing and combustion chamber E-and there is supplied with more air from the perforations d on that side, and in this chamber E the gases and air have ample room for eX- pansion, intimate mingling, and complete combustion and for the oxidation of all oxidizable elements, and thence the non-volatile constituents of the oref/. e., most of the metallic oXids, the earthy matters, and the non-oxidizable metals-fall directly into the Water or bath in the tank, while the sulfur and other gases and fumes, together with a small portion of the finest ore-dust, pass onto the smoke-stack, Where they are wetted down by water from the sprinkler and fall into the bottom of the stack, whence they may be removed for subsequent use or treatment through a suitable openin g g2.

The deflecting wall or walls L serve to arrest and deflect a considerable portion of the escaping dust down into the bath in the tank, so that but little passes onto the stack.

lf the ore be a pyritic ore and chlorid of lime or sodium be in the bath, the sulfur gases wetted down in the stack may be constantly conducted therefrom into the tank, where, combining with the bases, they for-m sulfates of lime or sodium, as the case may be, and liberate the chlorin to combine with the gold. If, however, the ore does not contain sufficient sulfur for this purpose of liberating enough chlorin from its base orbases, a suitable quantity of sulfuric acid may be introduced int-o the tank to effect the desired reactions.

lf free chlorin be in solution in the bath, no

sulfurons or other reagent is required to be introduced therein.

' As the work progresses the screw conveyer constantly agitates the pulp and solution and pushes the former into the well h', whence it, togetherwith some of the solution, is constantly being removed by a steam-Siphon h2 or other convenient device into a settlingtank O, from which the solution may be conducted to a precipitating-tank P or back to the furnace-tank, as hereinbefore set forth.

The water-level in the tank is constantly maintained by a supply from any available source.

It will be seen that the process is a continuous one and that the line particles of ore injected into the furnace can lodge nowhere therein excepting in the tank-bath, for the air-jets issuing through the perforations in the inclined faces of the` partition-wall prevent any lodgment thereon.

Instead of locating the ore-introducing machine at the base of the furnace, as shown in full lines, and injecting the ore axially up the liue portion O, we may locate it so as to inject the ore at a point higher up, as indicated in dotted lines at S, in which case the ore may be injected diagonally across the upper part of the portion O of the fine directly into the chamber E.

Having thus described our invention, we claim as new and desire to secure by Letters Patent- The process as herein described of treating gold ores for the purpose of winning the precious metal therefrom, consisting` in reducing the ore, by suitable mechanism, to exceedingly tine powder, in then iloating it, in separate, independent particles, on a current of air into and through a hot furnace to oxidize the base elements precipitating the hot nonvolatile particles continuously, separately and without aggregation, directly into a bath containing free chlorin 5 in keeping the pulp and liquid in constant agitation to better eX- pose the gold particles to the action of the solvent, and in conducting the liquid containing the soluble chlorid of gold into suitable filters or precipitating-tanks and there precipitating the gold, as set forth.

JACOB J. 'STORER FRANK MARTIN. GEORGE O. EATON.

Witnesses to signatures of Jacob J. Storer and George O. Eaton:

E. C. EATON, lll. L. S'roRER. Witnesses to signature of Frank Martin:

DANIEL MCCARTHY, L. B. Joss.

IOO 

